Finding the Fourth Proportional to 76,448.82, 105,502.88 and 42,457.46

Step by Step Solution

1. Step 1: Write the proportion equation
   76,448.82 : 105,502.88 = 42,457.46 : x
2. Step 2: Convert to fraction form
   76,448.82/105,502.88 = 42,457.46/x
3. Step 3: Cross multiply
   76,448.82x = 105,502.88 × 42,457.46
4. Step 4: Simplify right side
   76,448.82x = 4,479,384,307.48
5. Step 5: Solve for x
   x = 4,479,384,307.48/76,448.82
6. Step 6: Final answer
   x = 58,593.24